Signor of one-half to john newton



(No Model.) 3 SheetsSheet 1.

D. A. QUIGGIN. APPARATUS FOR EVAPORATING SEA OR OTHER WATER.

No. 448,542. Patented Mar. 17, 1891.

ar/e 06?" jme5 a? yy (No Model.) 3 SheetsSheet 2.

D. A. QUIGGIN. APPARATUS FOR EVAPORATING SEA OR OTHER WATER. No.448,642. Patented Mar. 17,1891:

3 Sheets-Sheet 3 (No Model.)

Patented Mar. 17,1891.

FIG-1H.

m-umo.. wAsmnamN n c iaiTnn STATES PATENT Onrion.

DANIEL ARTHUR QUIGGIN, OF BLUN DELL SANDS, NEAR LIVERPOOL, AS- SIGNOR OFONE-HALF TO JOHN NEWTON, OF LONDON, ENGLAND.

Measures FOR EVAPORATING SEA on crass WATER.

EEUEFEGATIQN forming part of Letters Patent No. 448,542, dated March 17,1891.

Application filed June 6, 1890 Serial No. 354:,142. (No model.) Patentedin England January 11, 1889, No. 538, and May 16, 1889,1T0. 8,139.

To aZZ whom it may concern.-

Be it lqnown that I, DANIEL ARTHUR Quie- GIN, a subject of the Queen ofGreat Britain, residing in Blundell Sands, near Liverpool, in the countyof Lancaster, England, have invented certain new and useful Improvementsin Apparatus for Evaporating Sea or other Water for Obtaining a Supplyof Fresh Water, (for which I have obtained Letters Patent in Greatjritain, dated January 11 and May 16, 1889, and numbered 538 and 8,139,respectively,) of which the following is a specification.

My invention relates to that class of apparatus in which the sea orother water to be evaporated in orderto obtainasupply of fresh water isheated by passing steam through heat-transmitting surfaces immersedtherein, the steam (which I shall hereinafter term primary steam) beingcondensed or partially condensed thereby. The vapor from the sea orother water, which will be subsequently referred to as secondary vapor,maybe led to a condenser and so form fresh water. .Vhere the apparatusis fitted on board ship, the main condenser of the engines is generallyutilized, and the fresh water so formed is used as feed make up for theboilers. In most cases, however, instead of leading the secondary vaporto a condenser, it is found more convenient and economical to lead it ora portion of it through the heattransmitting surfaces of a secondevaporator similar to the lirst, in which it is condensed and gives upits heat to the sea or other water in the said second evaporator. Thevaporso produced in the second evaporator, which 1 term tertiary vapor,is led to a condenser, or it may be led to the heat-transmittingsurfaces of a third evaporator, and so on for a series of evaporators,the vapor produced in the last evaporator of the series being led to acondenser. According to my present invention 1 pass thepartially-condensed primary steam after ithas left the first evaporatomthrough heat-transmitting surfaces in a feed-heater, in which it servesto heat the sea or other "ater used for feeding the everal evaporatorsand is itself thereby wholl condensed and cooled. hen a number ofevaporators are used in series,I feed them all from the one feed-heater,a feed-box being interposed, in which there is a separate feed-valve foreach evaporator, said feedvalves being, if necessary,differentiallyloaded to suit the different pressures in the severalevaporators.

The heat-transmitting surfaces used in my present invention arepreferably constructed as described in the specification and drawingslodged by me with an application dated May 1, 1890, for a patent, SerialNo. 350,165.

In order that my invention may be readily understood, reference is madeto the accompanying drawings, in which two evaporators are shown inseries, together with a feed-heater and feed-box.

Figure I shows the apparatus in elevation, one of the evaporators, whichare similar, being in section on the line AA of Fig. II. The evaporatorsare shown farther apart than usual in order that the connections maybeindicated more clearly. Fig. 11 is a plan of the apparatus, one of theevaporators being in section on the line B B of Fig. 1', the battleplate14; being removed. Fig. III is an end elevation, the feed-heatcr andfeed-box being in sect-ion on the lines C O of Fig. 11; and Fig. IV is asection through the feed-box on the line D D of Fig. Ill.

lhroughout the drawings similar parts are indicated by the samereference-figures, and in the case of sections the direction in whichthey are viewed is indicated by the small arrows placed adjacent to theletters denoting the plane of section.

The evaporators consist each of an upright cylindrical shell 1, havingdished ends, forming the top 2 and bottom 3. The ends are strengthenedby a stay-bar 4, which is secured to each and is prolonged through thebottom and serves as a holding-down bolt 5, by means of which theevaporator is secured to its seating 6. The primary steam enters by thepipe 7 and inlet-valve 8 to the inlet-pipe 9. The inlet-pipe is circularin plan and has a number of unions, to which are attached theheattransmitting surfaces 10, which consist of helical coils ofcrescent-shaped cross-section constructed in accordance with myspecificacoils are attached to unions on a condensed steam-outlet pipe11, similar to the steam-inlet pipe. The partially-condensed steamleaves the evaporator by the pipe 12 and passes into the feed-heater.The secondary vapor leaves outlet is designed to prevent any of thewater in the evaporator leaving with the vapor as a result of priming.Over the outlet is held a cup 13. Water trapped in the outlet drainsbackinto the evaporator by the holes 36 in the pan 13 Priming is alsoprevented or mitigated by the battle-plate 1'4. -The second ary vapor isled from the first evaporator to the heating-surfaces of thesecond'evaporator by the pipe 15, and after passing through the saidheating-surfaces it leaves the evaporator by the outlet-pipe 16. Whereit is not deevaporator, a portion isled through the by pipe 17. Thispipe 17is led, into the outletpipe 16 after the manner of an ejeciiQfrlgz zle, so as to draw the secondary vapor through the heating-surfaces.The secondary vapor, which leaves the apparatus by the pipe 16?, and thetertiary vapor, which leavesr bythe outlet-pipe 46, when condensed andcooled, 5

form potable water.

The evaporators are fitted with man -h o1 e doors 18, and blow-oft cocks'19. The; usual mountings, such as safety-valvesand pressure and watergages, are also fitted, butane not shown in the drawings. 1

Referring now to the arrangement for supplying and heating thefeed-waterf, which is illustrated in Figs. III and IV, the'feed; heaterconsists of a cylindrical shell 37, with detachable ends 38, to whichthe heating-sur faces 39 are attached, these latter being; incommunication through their ends with the inlet-pipe 12 and outlet-pipe40. The partially-condensed primary steam, as before mentioned, entersthe heating-snrfaees 39 of the feed-heater by the pipe 12, is whollyQ011- densed therein, and leavesthefeed heaterfas fresh but notpotablewater by the ontlet40, and is generally returned tothe boiler.The

feed-box 20 is rectangular in shapefand is divided into two chambers 2.1;and122, which spectively. The feed-water enters the feed} heater by theinlet 23, and, after being heated by passing round the heating surfaces39-, it passes by the two pipes 2. and into the chambers 21 and 22. Eachof theseTlatter chambers is connected to its evaporatorjhy a steam-pipe2 6'and water-pipe 27,"s o that the water-level in each chamber is thesame as that in the evaporator to which it is con nected. Thefeed-waterenters thechambers 21 and 22 by the valves 28 and 2 9,wliiehare controlled by thetloats 30 and 31. The valves are loaded by theweights 32. and 33. The floats are carried on bell-crank levers 34,fulcrumed at and'connected to the valves by thefulerum 35.

an ease a so l Qithe fir t evaporat r o. h a i s,1-.1,r a9e f. t e tedter h r, s bs links 41. The link and short arm of the lerver form atoggle-joint, which, as the float rises, operates to shut the valve. Theadjustable screws 42 limit the lift of the valves.

The amount by which the valve is opened for .any given water-level isdetermined by the the evaporator by the vapor-outlet 13. This.

position of the. valve-seating 43 relatively to The valve-seating isscrewed externally, and its position-relatively to the fulcrum, isadjusted by turning it by means of the hexagon head 44-. It is securedin the proper position by the check-nut 45. The

, pipes 24 and 25 are attached to the seatings -of'theval'ves 2S and 29'by unions. In this way the. evaporators are fed from a common 1 supplyand the level of the Water kept constant in each, although the pressuresin each 1 may be difierent. rer rete is s aa r a q an ym st ro sired topass the whole of thesecondary vapor through the heating-surfaces. inthe secend Where the water to be time to time be blown out through theblowcbcks; i9ftokeep the degree of saturation within the requiredlimit.

Althoughl find it convenient to use tubular helical; coils ctcrescent-shaped cross-sect on. c nst uc d. a rdin t y pri r ificatienbefoi'e mentioned as heat-transmit engagee in my present invention, I donot confine myself to the use of such coils.

Having now full-y; described my invention,

whatI claim, and desire to secure-by Letters :1 at-6 8 e m i ei a an:evapora appaat s t e erepeaterha b r-ha in ts-s s eth a i a he tin-series a ipe 12, nne ing'theheating-surfaceof the evaporator with nthefeed-water heater, also substantially as described.

. emh natien we er e ofi ap r a feed-.watenheater having, water-pipeslead- 5 ing tothe seve al 'rately cont ev porat rs, eans r ep h 19W i Wr ro h team-pipe leading from the i'a l a e qr beo In apparatus m' v pra ng s a r other nterior b ai ing s pp yofffresh wa supply the firstand second evaporators, re; the'com bination ot' twoor more evaporator-sin, series, the heat-transmitting surfaces of ithe second and eachsucceeding evaporator ibeing connected to. the Vapor-outlet of the vn-ma e mme i t ly p c din a feedheater the heating-surfacesot which areconrators, each chamber being connected to its evaporator byleveling-pipes, and receiving theheated feed-water from the feed-heaterby a pipe which communicates with the chamber through a valve controlledby a float in said chamber, the said valves being differentially loadedto suit the diiferent pressures in,

. that of. the, feed water heater, anda conduit- IIO the severalevaporators, substantially as described.

4-. In apparatus for evaporating sea or other Water for obtaining asupply of fresh Water, in combination with a series of evaporators, afeed-box having as many chambers as there are evaporators, each chamberbeing connected to its evaporator by levelii'ig-pipes and communicatingwith the feed supply by means of a valve controlled by a float in saidchamber, said valves being, if necessary, differentially loaded to suitthe different pressures in the several evaporators, substantially asdescribed.

5. In apparatus forevaporat-iugseaorother water for obtaining a supplyof fresh water, in combination, a feed-box 20, a feed-valve controlledby a float which is attached to one arm of a bell-crank lever, the otherarm of the lever and a link connectingit to the valve forming atogglejoint by means of which the valve is operated, and a valveseatinga3, ad-

justable through the Wall of the box from the outside in positionrelatively to the fulcrum of said bell-crank lever, substantially asdescribed.

(3. In apparatus for evaporating sea or other water for obtaining asupply of fresh Water, in combination with the vapor-inlet pipe andcondensed-vapor-outlet pipe, a pass-by pipe forming a branch of theinlet-pipe, through which a portion of the vapor passes instead ofpassing through the heating-surfaces, said pass-by pipe being led intothe condensedvapor-outlet pipe after the manner of an ejector,substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

DANIEL ARTHUR QUIGGIN.

Witnesses:

R0131. A. SLOAN, J. E. LLOYD BARNES.

